Which of the following structures would you expect to find in a single-celled organism?
a.
internal organs
b.
legs and feet
c.
outer covering
d.
large brain

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.